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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
epididymis: definition - 3 parts - 4 functions
normal presentation of the fetus
burdizzo
~1 month
2. Not under a timeline - cow can not be sold as steak
seminiferous tubules
Brown Swiss Cow
retractor muscles
Grading choice
3. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
mare estrus
hormones
reasons for castration
stag
4. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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5. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
seasonally polyestrous
dairy cattle pregnancy check
feeding a high producing dairy cow
6-8 weeks
6. Failure to have one testis (gonad) to descend
monorchid
what has to happen for males for copulation to occur
butterfat
dry matter and water
7. To remove/separate testicles from animal's body before animal reaches puberty
seasonally polyestrous
castration
dry-off time in dairy cattle
Reasons for gestation length being affected
8. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
hypothalamus and pituitary gland
ewe ovulation
oviducts
rectal palpation (BSE)
9. 45-60 days after breeding; re-breed as required
sow ovulation
effects of BST
dairy cattle pregnancy check
Sperm growth rate
10. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
uterus
Blood
Jersey Cow
polyestrous
11. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat
Follical Stimulating in males
mare's estrous cycle
Reasons for gestation length being affected
functions of progestrone
12. 2 month growth cycle. stored in the epididymis of the bull
Follical Stimulating in males
sow ovulation
Sperm growth rate
kidney stones also called ________ ___________ can develop in the sigmoid flexure
13. Animal which has been castrated after puberty
cryptorchid
Jersey Cow
Parturition
stag
14. Birthing process (termination of gestation)
Parturition
functions of progestrone
epididymis: definition - 3 parts - 4 functions
pelvis
15. Important 'landmark' during palpation
cervix
uterus
Follical Stimulating in females
sow gestation
16. Milk ~305 days - dry 60 days prior to calving
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
sow estrus cycle
accessory sex glands
Dairy Cattle milking schedule
17. (LH) causes female's egg to break (her period)
Lutinizing Hormone in females
uterus
1. more cost effective - 2. powdered milk is in excess production
scrotal circumference (BSE)
18. Sperm production
eminal vesicles
spermatogenesis
estrus
butterfat
19. ~305 days (altough often longer due to breeding difficulties)
dry matter and water
Dairy Cattle Lactation (standard)
hypothalamus and pituitary gland
femininity of a heifer
20. Why Dairy calves are fed powdered milk.
estrous
hypothalamus and pituitary gland
1. more cost effective - 2. powdered milk is in excess production
sow estrus
21. Animals which have many estrous periods per year (ex: cow - sow)
polyestrous
seasonally polyestrous
behavioral signs of estrus
sperm cell
22. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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23. Animals which have only one estrous cycle (ex: dog - fox)
colostrum
mare's estrous cycle
monestrous
spermatogenesis
24. Duct through penis that carries sperm and urine
vulva
organs used in spermatogenesis
urethra
dry-off time in dairy cattle
25. Why does estrus happen before ovulation?
sperm cell
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
mare estrus
mastitis
26. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
sperm cell
kidney stones also called ________ ___________ can develop in the sigmoid flexure
normal presentation of the fetus
libido test (BSE)
27. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
uterus
Mares
feeding a high producing dairy cow
Follical Stimulating in females
28. Larger the cow - more milk is produced; smaller the cow - less milk is produced
things to check for in a breeding soundness exam (BSE)
mare estrus cycle
Size of cow in relation to the amount of milk produced
Where livelihood is in agriculture
29. Animals which have only one estrous cycle (ex: dog - fox)
prostate gland
ewe's estrous cycle
Grading choice
monestrous
30. 19-23 (21) days
cow estrus cycle
Dairy Cattle milking schedule
vulva
Holstein Cow
31. What about the sperm for a bull which has been castrated but still has testicles?
dry-off time in dairy cattle
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
burdizzo
Dairy Cattle Gestation
32. Check feet and legs - look for masculine traits in build such as crest and muscling
penis proper
visual evaluation (BSE)
cow estrus cycle
Follical Stimulating in females
33. Male on one pin and female on other side
butterfat
libido test (BSE)
Dairy Cattle Lactation (standard)
hormones
34. Not under a timeline - cow can not be sold as steak
Lutinizing Hormone in females
Grading choice
Culls bulls earlier (2 reasons)
seminiferous tubules
35. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
uterus
cow estrus
penis sizes vs delivering methods
colostrum
36. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
age and castration
organs used in spermatogenesis
sow estrus cycle
monorchid
37. Front feet and head first. (except for hogs and dogs)
normal presentation of the fetus
6-8 weeks
sertoli cells
mare ovulation
38. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
castration
ewe's estrous cycle
effects of estrogen
mare gestation
39. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co
behavioral signs of estrus
effects of BST
stag
epididymis: definition - 3 parts - 4 functions
40. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
leydid or interstitial cells
dry-off time in dairy cattle
prostaglandin
effects of estrogen
41. When are steers and heifers weaned from bottle feeding?
reasons for castration
6-8 weeks
Bull's fibro-elastic penis
mare's estrous cycle
42. Failure to have one testis (gonad) to descend
monorchid
effects of estrogen
~1 month
leydid or interstitial cells
43. Sperm is produced here
monestrous
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
seminiferous tubules
Reasons for gestation length being affected
44. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
oviducts
penis sizes vs delivering methods
prostaglandin
cervix
45. Look for infection - split - and rupture of the penis
penis and prepuce observation (BSE)
mare estrus cycle
mare ovulation
Where livelihood is in agriculture
46. The more stressed out the male is - the less sperm he is going to produce
estrous
rectal palpation (BSE)
humans: stress level vs sperm
organs used in spermatogenesis
47. Provide nourishment for the developing sperm
mare ovulation
uterus
pelvis
sertoli cells
48. Why Dairy calves are fed powdered milk.
1. more cost effective - 2. powdered milk is in excess production
seasonally polyestrous
Where livelihood is in agriculture
growth lost from castration methods (knife & band)
49. When are dairy cattle dehorned?
~1 month
eminal vesicles
purpose of Breeding Soundness Exam (BSE) for males
kidney stones also called ________ ___________ can develop in the sigmoid flexure
50. Animals which have many estrous periods per year (ex: cow - sow)
dry-off time in dairy cattle
Hormones from both the fetus and the mom.
polyestrous
oviducts